JP6670460B2 - Method of changing molten glass substrate and continuous glass melting furnace - Google Patents
Method of changing molten glass substrate and continuous glass melting furnace Download PDFInfo
- Publication number
- JP6670460B2 JP6670460B2 JP2015189398A JP2015189398A JP6670460B2 JP 6670460 B2 JP6670460 B2 JP 6670460B2 JP 2015189398 A JP2015189398 A JP 2015189398A JP 2015189398 A JP2015189398 A JP 2015189398A JP 6670460 B2 JP6670460 B2 JP 6670460B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- molten glass
- corner
- melting furnace
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000006060 molten glass Substances 0.000 title claims description 68
- 238000006125 continuous glass melting process Methods 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 28
- 239000000758 substrate Substances 0.000 title claims description 17
- 239000002994 raw material Substances 0.000 claims description 84
- 238000011144 upstream manufacturing Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000605 extraction Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 11
- 239000006121 base glass Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 7
- 238000005206 flow analysis Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Glass Melting And Manufacturing (AREA)
Description
本発明は、溶融ガラスの素地替え方法及び連続ガラス溶融炉に関する。 TECHNICAL FIELD The present invention relates to a method for changing the basis of molten glass and a continuous glass melting furnace.
従来、連続ガラス溶融炉における溶融ガラスの素地替え（例えば、組成の変更や色の変更）方法としては、溶融中のガラスとは異なる品種の溶融ガラスを投入し、溶融中のガラスを順次流出させる方法（押し出し法）と、溶融炉から溶融ガラスの大部分を一旦排出した後に新たな溶融ガラスを投入する方法（素地抜き法）とがある。 2. Description of the Related Art Conventionally, as a method of changing the basis of molten glass in a continuous glass melting furnace (for example, changing the composition or changing the color), a molten glass of a type different from the glass being melted is put in, and the glass being melted is sequentially discharged. There is a method (extrusion method) and a method of once discharging most of the molten glass from the melting furnace and then introducing new molten glass (base blanking method).
押し出し法は、炉の規模や要求ガラス品質にも依存するが、素地替えに通常１週間程度の日数を要する。特に、溶融中のガラスと新たな溶融ガラスとの密度差が大きい場合や、着色した溶融ガラスから着色していない新たな溶融ガラスへ素地替えする場合は、素地替えにさらに長期間を要する。 Although the extrusion method depends on the size of the furnace and the required glass quality, it usually takes about one week to change the substrate. In particular, when the density difference between the glass being melted and the new molten glass is large, or when the base is changed from a colored molten glass to a new uncolored molten glass, the base replacement requires a longer time.
素地抜き法は、溶融中のガラスと新たな溶融ガラスとの密度差が大きい場合や、着色した溶融ガラスから着色していない新たな溶融ガラスへ素地替えする場合は、押し出し法よりも短期間で素地替えを行うことができる。 The blanking method is faster than the extrusion method when the density difference between the glass being melted and the new molten glass is large, or when replacing the colored molten glass with a new uncolored molten glass. Substrate replacement can be performed.
例えば特許文献１には、溶融槽の底壁または側壁の下部に配設された溶融ガラスの素地抜き出し口を有する連続ガラス溶融炉が記載されている。 For example, Patent Literature 1 describes a continuous glass melting furnace having a base for discharging molten glass disposed below a bottom wall or a side wall of a melting tank.
しかしながら、押し出し法及び素地抜き法の何れにおいても、溶融炉の隅部付近の溶融ガラスが排出されずに残りやすいことから、溶融ガラスを完全に素地替えするには長時間を要する。 However, in both the extrusion method and the blanking method, since the molten glass near the corner of the melting furnace is likely to remain without being discharged, it takes a long time to completely change the molten glass.
本発明の目的は、素地替えを容易に、且つ短期間で行うことのできる溶融ガラスの素地替え方法及び連続ガラス溶融炉を提供することにある。 An object of the present invention is to provide a method and a continuous glass melting furnace for molten glass which can be easily and quickly replaced.
本発明者等は、後述する数値流れ解析結果から、隅部に原料バッチを投入すれば、隅部付近の溶融ガラスの滞留が解消して速やかに排出されることを見出した。図３はここで使用した解析モデルを平面視して示している。数値流れ解析の概要を以下に示す。 The present inventors have found from the results of numerical flow analysis to be described later that if a raw material batch is charged into a corner, the molten glass in the vicinity of the corner is eliminated and discharged quickly. FIG. 3 shows the analysis model used here in plan view. The outline of the numerical flow analysis is shown below.
解析に使用したモデルは、高さ２００ｍｍ、幅２００ｍｍ、長さ３００ｍｍの大きさを有し、上流側側壁１１、左側壁１２、右側壁１３、下流側側壁１４、底壁１５及び天井(図示せず)からなる矩形容器である。異種溶融ガラスの投入口は、上流側側壁１１の中央部（投入位置１６）、上流側側壁１１の両隅部付近（投入位置１８ａ、１８ｃ）の３ケ所とした。溶融ガラス（素地）の抜き出し口１９は、下流側側壁と左側側壁とで囲まれる隅部の炉底に設定した。 The model used for the analysis has a size of 200 mm in height, 200 mm in width, and 300 mm in length, and has an upstream side wall 11, a left side wall 12, a right side wall 13, a downstream side wall 14, a bottom wall 15, and a ceiling (not shown). )). The inlets for dissimilar molten glass were three at the center of the upstream side wall 11 (injection position 16) and near both corners of the upstream side wall 11 (injection positions 18a and 18c). The outlet 19 for the molten glass (base) was set at the furnace bottom at a corner surrounded by the downstream side wall and the left side wall.
このモデルにおいて、まず液面高さが５０ｍｍとなるまで投入位置から溶融ガラス（前素地ガラスＡ）を供給し、次に液面高さが１５５ｍｍになるまで異種溶融ガラス（後素地ガラスＢ）を投入し、続いて液面高さが５０ｍｍに戻るまで抜き出し口１９から溶融ガラスを排出した。ここで投入位置を１６とした場合を解析例１、投入位置を１８ａ及び１８ｃとした場合を解析例２として、表面における素地ガラスの残留割合を数値解析により求めた。 In this model, first, molten glass (pre-base glass A) is supplied from the charging position until the liquid level reaches 50 mm, and then dissimilar molten glass (post-base glass B) is supplied until the liquid level reaches 155 mm. The molten glass was discharged from the outlet 19 until the liquid level returned to 50 mm. Here, the case where the input position was 16 was set as Analysis Example 1, and the case where the input positions were set at 18a and 18c was set as Analysis Example 2, the residual ratio of the base glass on the surface was obtained by numerical analysis.
その結果、解析例１では、表面の素地ガラスの残留割合が２５．２％（図４（ａ））であり、また上流側の両隅部に素地ガラスが残存していた。一方、解析例２では、表面の素地ガラスの残留割合が１９．１％（図４（ｂ））であり、また上流側の両隅部には素地ガラスの残存が認められなかった。これらの解析結果から、隅部から素地替え用原料バッチ（異種原料バッチ）を投入すれば、当該隅部に存在する素地ガラスの滞留が解消されることが明らかになった。 As a result, in Analysis Example 1, the residual ratio of the base glass on the surface was 25.2% (FIG. 4A), and the base glass remained at both corners on the upstream side. On the other hand, in Analysis Example 2, the residual ratio of the base glass on the surface was 19.1% (FIG. 4B), and no residual base glass was recognized at both corners on the upstream side. From these analysis results, it has been clarified that if the raw material batch for replacement of the base material (different raw material batch) is supplied from the corner, the stagnation of the base glass existing in the corner is eliminated.
この解析結果にヒントを得て、本発明者等は以下の発明を提案するものである。 Inspired by this analysis result, the present inventors propose the following invention.
即ち、本発明の溶融ガラスの素地替え方法は、上流側に設けられた原料投入口から原料バッチを投入し、下流側に設けられた流出口から溶融ガラスを流出させて成形手段に送る連続ガラス溶融炉内で、溶融ガラスを素地替えする溶融ガラスの素地替え方法であって、原料投入口とは別に設けられた素地替え用原料投入口から、溶融ガラスとは異なる組成となるように調合された異種原料バッチを投入することを特徴とする。ここで「溶融ガラスの素地替え」とは、ある組成の溶融ガラスを別の組成の溶融ガラスに置き換えることを意味する。「原料バッチ」とは、所定のガラス組成となるように調合されたガラス原料及び／又はガラスカレットである。 That is, the method for refining the molten glass of the present invention is a continuous glass feeding a raw material batch from a raw material charging port provided on an upstream side, flowing molten glass from an outlet provided on a downstream side, and sending the molten glass to forming means. In a melting furnace, a method for changing the basis of molten glass for changing the basis of molten glass, wherein a composition different from that of molten glass is prepared from a raw material replacement port provided separately from a raw material inlet. It is characterized by feeding different kinds of raw material batches. Here, “substitution of molten glass” means that molten glass of a certain composition is replaced with molten glass of another composition. The “raw material batch” is a glass raw material and / or glass cullet prepared to have a predetermined glass composition.
上記方法によれば、溶融炉の下流側といった通常生産時には利用しない投入位置から素地替え用の異種原料バッチを投入することが可能になる。このため最適な位置から素地替え用の異種原料バッチを投入することが可能になる。また通常生産時に使用する原料投入口の位置を決定する際に、素地替え時の投入を考慮する必要がなくなることから、通常生産に最適な位置に原料投入口を設けることができる。 According to the above method, it is possible to input a different kind of raw material batch for substrate replacement from an input position that is not used during normal production, such as on the downstream side of the melting furnace. For this reason, it becomes possible to feed a different kind of raw material batch for substrate replacement from an optimal position. In addition, when deciding the position of the raw material input port used in the normal production, it is not necessary to consider the input at the time of substrate replacement, so that the raw material input port can be provided at a position optimal for the normal production.
本発明においては、異種原料バッチの投入を、連続ガラス溶融炉の少なくとも一つの隅部から行うことが好ましい。「連続溶融炉の隅部」とは、平面視で、各コーナーを形成する２辺のうち短辺の１／３を半径として、溶融炉内部の各コーナーからこの半径内の領域を指す。「隅部から原料バッチを投入する」とは、隅部を構成する何れかの側壁の液面より上方に設けられた原料投入口から原料バッチを連続ガラス溶融炉の内部に供給することを意味する。「溶融ガラスとは異なる組成となるように調合された異種原料バッチ」とは、切り替え完了後の組成となるように調合された原料バッチに限定されるものではなく、切り替え後のガラスと溶融ガラスとの中間にある組成となるように調合された原料バッチも含む。 In the present invention, it is preferable that the charging of the batch of different raw materials is performed from at least one corner of the continuous glass melting furnace. The “corner portion of the continuous melting furnace” refers to a region within a radius from each corner inside the melting furnace with a radius of one third of a shorter side of two sides forming each corner in plan view. “Introducing the raw material batch from the corner” means supplying the raw material batch into the continuous glass melting furnace from the raw material inlet provided above the liquid surface of any of the side walls constituting the corner. I do. The `` heterogeneous raw material batch prepared so as to have a composition different from that of the molten glass '' is not limited to the raw material batch prepared so as to have a composition after the completion of the switching, and the glass after the switching and the molten glass And a raw material batch prepared to have a composition in between.
上記方法を採用すれば、素地替え時に残留し易い隅部付近の溶融ガラスを排出することが容易になる。 If the above method is adopted, it becomes easy to discharge the molten glass in the vicinity of the corner that is likely to remain when the substrate is replaced.
本発明においては、異種原料バッチの投入を、連続ガラス溶融炉の下流側から行うことが好ましい。 In the present invention, it is preferable to charge the different raw material batches from the downstream side of the continuous glass melting furnace.
上記方法を採用すれば、通常は原料投入口を配置しない下流側の隅部付近の溶融ガラスを排出することが可能になる。 If the above method is adopted, it is possible to discharge the molten glass near the downstream corner where the raw material inlet is not usually arranged.
本発明においては、溶融ガラスを排出して液面レベルを低下させた後、異種原料バッチを投入することが好ましい。この場合においては、溶融ガラスの排出による液面レベルの低下と、異種原料バッチの投入による液面レベルの上昇を複数回繰り返すことが望ましい。 In the present invention, after the molten glass is discharged to lower the liquid level, it is preferable to input a different kind of raw material batch. In this case, it is desirable that the lowering of the liquid level due to the discharge of the molten glass and the raising of the liquid level due to the introduction of the different kinds of raw material batches are repeated plural times.
本発明においては、溶融ガラスの排出を、連続ガラス溶融炉の隅部に設けられた素地抜き出し口から行うことが好ましい。ここで「隅部に設けられた素地抜き出し口」とは、隅部を構成する何れかの側壁の炉底付近、又は隅部付近の炉底に設けられた素地抜き出し口を意味する。 In the present invention, it is preferable that the molten glass is discharged from a base outlet provided at a corner of the continuous glass melting furnace. Here, the "base extraction port provided in the corner" means a base extraction port provided in the vicinity of the furnace bottom of one of the side walls constituting the corner or in the furnace bottom near the corner.
上記方法を採用すれば、素地替え時に残留し易い隅部の溶融ガラスを速やかに排出することができる。 If the above method is adopted, the molten glass in the corner portion which is likely to remain at the time of substrate change can be quickly discharged.
本発明においては、素地抜き出し口が設けられた隅部とは別の隅部から異種原料バッチを投入することが好ましい。 In the present invention, it is preferable to charge the different raw material batch from a corner different from the corner provided with the base extraction port.
上記方法を採用すれば、異種原料バッチを投入することによる溶融ガラスの押し出し効果を有効に活用することができる。 If the above method is adopted, the effect of extruding the molten glass by introducing different kinds of raw material batches can be effectively utilized.
本発明においては、溶融ガラスの排出と、異種原料バッチの投入を同時に行うことが可能である。この場合においては、上流側隅部から異種原料バッチを投入した後、下流側隅部から異種原料バッチの投入を開始することが望ましい。 In the present invention, the discharge of the molten glass and the charging of the different raw material batch can be performed simultaneously. In this case, it is desirable to start feeding the heterogeneous raw material batch from the downstream corner after charging the heterogeneous raw material batch from the upstream corner.
上記方法を採用すれば、押し出し法を利用した溶融ガラスの素地替えを短時間で行うことができる。 If the above method is adopted, the base material of the molten glass using the extrusion method can be changed in a short time.
本発明の連続ガラス溶融炉は、上流側に設けられた原料投入口と、下流側に設けられた流出口と、加熱手段とを有する連続ガラス溶融炉であって、連続ガラス溶融炉の少なくとも一つの隅部に、原料バッチ投入口とは別に設けられた素地替え用原料投入口を設けたことを特徴とする。 The continuous glass melting furnace of the present invention is a continuous glass melting furnace having a raw material input port provided on the upstream side, an outlet provided on the downstream side, and a heating means, wherein at least one of the continuous glass melting furnaces is provided. It is characterized in that a raw material replacement port for raw material replacement provided separately from the raw material batch input port is provided at one corner.
上記構成の溶融炉を使用すれば、素地替え時に残留し易い隅部付近の溶融ガラスを排出することが容易になる。 If the melting furnace having the above configuration is used, it becomes easy to discharge the molten glass in the vicinity of the corner which is likely to remain when the substrate is replaced.
本発明においては、連続ガラス溶融炉の少なくとも一つの隅部に、素地抜き出し口を設けることが好ましい。この場合においては、素地抜き出し口が設けられた隅部には、素地替え用原料投入口が設けられていないことが望ましい。 In the present invention, it is preferable to provide a base extraction port at at least one corner of the continuous glass melting furnace. In this case, it is desirable that the raw material replacement port is not provided at the corner where the base extraction port is provided.
上記構成の溶融炉を採用すれば、素地替え時に残留し易い隅部付近の溶融ガラスを速やかに排出することができる。 If the melting furnace having the above configuration is employed, the molten glass in the vicinity of the corner which is likely to remain when the substrate is replaced can be quickly discharged.
以下、本発明の実施例を説明する。ただし本発明は以下の実施形態に限定されるものではない。
（実施態様１）
まず、素地抜き出し口を有する連続ガラス溶融炉を用いた本発明の実施形態を説明する。図１は、連続ガラス溶融炉の内部を平面視した説明図である。
Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the following embodiments.
(Embodiment 1)
First, an embodiment of the present invention using a continuous glass melting furnace having a base outlet will be described. FIG. 1 is an explanatory view showing the inside of a continuous glass melting furnace in a plan view.
連続ガラス溶融炉２０は、上流側側壁２１、左側壁２２、右側壁２３、下流側側壁２４、底壁２５及び天井（図示せず）で囲まれ、溶融ガラスを一定時間滞留可能な内部空間を有している。また上流側側壁２１の壁面には、図示しない原料供給手段と連通した複数の原料投入口２６ａ、２６ｂ、２６ｃが、下流側側壁２４の壁面には、図示しない成形手段へと通じる流出口２７がそれぞれ設けられている。さらに連続ガラス溶融炉２０には、バーナー、電極等の図示しない加熱手段が備えられている。なお原料投入口は必ずしも３箇所である必要はない。 The continuous glass melting furnace 20 is surrounded by an upstream side wall 21, a left side wall 22, a right side wall 23, a downstream side wall 24, a bottom wall 25, and a ceiling (not shown). Have. A plurality of raw material inlets 26a, 26b, 26c communicating with raw material supply means (not shown) are formed on the wall surface of the upstream side wall 21, and an outlet 27 communicating with molding means (not shown) is formed on the wall surface of the downstream side wall 24. Each is provided. Further, the continuous glass melting furnace 20 is provided with a heating means (not shown) such as a burner and an electrode. It is not always necessary to provide three raw material inlets.
本実施態様においては、さらに通常生産で使用する原料投入口２６ａ、２６ｂ、２６ｃとは別に、素地替え用原料投入口２８ａ、２８ｂ、２８ｃが設けられている。素地替え用原料投入口２８ａは、上流側側壁２１の左側壁２２に近い壁面に設けられており、素地替え用原料投入口２８ｂ、２８ｃは、右側壁２３の上流側側壁２１及び下流側側壁２４に近い壁面にそれぞれ設けられている。ここで各素地替え用原料投入口は、何れも図示しない原料供給手段と連通している。なお素地替え原料用投入口は、必ずしも３箇所である必要はないが、少なくとも下流側に１箇所以上設けられていることが好ましい。 In the present embodiment, raw material input ports 28a, 28b, 28c are provided separately from the raw material input ports 26a, 26b, 26c used in normal production. The raw material replacement port 28 a is provided on a wall surface of the upstream side wall 21 near the left side wall 22, and the material replacement port 28 b, 28 c is provided on the upstream side wall 21 and the downstream side wall 24 of the right side wall 23. Each is provided on a wall close to. Here, each raw material replacement port is in communication with a raw material supply means (not shown). It should be noted that the number of the inlets for the raw material replacement material is not necessarily three, but it is preferable that at least one or more is provided at the downstream side.
また連続ガラス溶融炉２０の底壁２５には、左側壁２２と下流側側壁２４とで囲まれる隅部に、溶融ガラスを下方へ排出する素地抜き出し口２９が設けられている。素地抜き出し口２９は、通常は溶融ガラスが流出しないように、金属製、或いはセラミック製のキャップによって閉じられており、溶融ガラスを排出する必要があるときのみ、キャップを取り外して開口される。またキャップは高温に晒されることから、キャップ周囲に冷却装置を設けておくことができる。なお素地抜き出し口は、底壁ではなく、側壁の下部に設けることも可能である。なお本実施態様では、素地抜き出し口２９は１箇所としているが、複数の隅部に設けてもよい。この場合、素地替え効率の観点から、素地抜き出し口を設けた隅部には、素地替え原料用投入口を設置しないことが好ましい。 The bottom wall 25 of the continuous glass melting furnace 20 is provided with a base outlet 29 for discharging molten glass downward at a corner surrounded by the left side wall 22 and the downstream side wall 24. The base outlet 29 is normally closed by a metal or ceramic cap so that the molten glass does not flow out. The cap is removed and opened only when it is necessary to discharge the molten glass. Further, since the cap is exposed to a high temperature, a cooling device can be provided around the cap. In addition, it is also possible to provide the base outlet at the lower part of the side wall instead of the bottom wall. In the present embodiment, the base extraction port 29 is provided at one place, but may be provided at a plurality of corners. In this case, from the viewpoint of the base changing efficiency, it is preferable that the base changing material input port is not provided at the corner where the base extracting port is provided.
次に上記の連続ガラス溶融炉２０を用いて別組成のガラスに切り替えるには、以下の工程を有する素地抜き法を採用することができる。 Next, in order to switch to glass of another composition using the above continuous glass melting furnace 20, a blanking method having the following steps can be employed.
第一の工程として、素地抜き出し口２９を開口し、溶融ガラスを素地抜き出し口２９から排出する。このとき連続ガラス溶融炉２０内の溶融ガラスを全て抜き出すことは長時間を要することから、本発明では溶融ガラスの液面がある程度のレベルまで低下すれば抜き出しを完了してよい。 As a first step, the base outlet 29 is opened, and the molten glass is discharged from the base outlet 29. At this time, since it takes a long time to extract all of the molten glass in the continuous glass melting furnace 20, in the present invention, the extraction may be completed if the liquid level of the molten glass decreases to a certain level.
第二の工程として、素地替え用原料投入口２８ａ、２８ｂ、２８ｃの少なくとも一つから、異種原料バッチを投入する。異種原料バッチの投入は、液面が通常生産時のレベルに達するまで続ける。 As a second step, a different kind of raw material batch is charged from at least one of the raw material replacement ports 28a, 28b, 28c. The introduction of the different raw material batches is continued until the liquid level reaches the level at the time of normal production.
第三の工程として、再び素地抜き出し口２９を開口する。これにより、異種原料バッチの投入によって隅部から追い出された溶融ガラス（素地ガラス）が素地抜き出し口２９から排出される。 As a third step, the base outlet 29 is opened again. As a result, the molten glass (base glass) expelled from the corner by the introduction of the different raw material batch is discharged from the base outlet 29.
上記第二、第三の工程を繰り返して素地替えを完了させる。 The above second and third steps are repeated to complete the substrate change.
素地替えが完了したと判断した時点で、原料の投入を素地替え用原料投入口２８ａ、２８ｂ、２８ｃから、通常の原料投入口２６ａ、２６ｂ、２６ｃに戻し、通常生産を開始する。 When it is determined that the base change has been completed, the input of the raw materials is returned from the base material input ports 28a, 28b, 28c to the normal raw material inlets 26a, 26b, 26c, and normal production is started.
なお上記の素地替え方法に代えて、素地抜き出し口２９からの溶融ガラスの排出と、素地替え用原料投入口２８ａ、２８ｂ、２８ｃ（の少なくとも一つ）からの異種原料バッチの投入を同時に行う押し出し法を採用してもよいことは言うまでもない。また場合によっては、通常生産で使用する原料投入口２６ａ、２６ｂ、２６ｃ（の少なくとも一つ）を異種原料バッチの投入口として補助的に使用することも可能である。また、異種原料バッチの投入は、液面が通常生産時より低いレベルで停止してもよい。
（実施態様２）
本実施態様で使用する連続ガラス溶融炉３０は、素地抜き出し口を有さないこと、素地替え用原料投入口を上流側側壁３１の両隅部付近（３８ａ、３８ｂ）及び下流側側壁３４の両隅部付近（３８ｃ、３８ｄ）に設けたことを除き、実施態様１と同じ構成を有する。実施態様１共通する構成については説明を省略する。
In addition, instead of the above-described substrate changing method, extrusion is performed in which the molten glass is discharged from the substrate extraction port 29 and the different material batch is supplied from (at least one of) the raw material input ports 28a, 28b, and 28c for the substrate replacement. It goes without saying that the law may be adopted. In some cases, (or at least one of) the raw material input ports 26a, 26b, and 26c used in normal production can be used as an auxiliary material batch input port. Further, the charging of the different raw material batches may be stopped at a liquid level lower than that during normal production.
(Embodiment 2)
The continuous glass melting furnace 30 used in the present embodiment does not have a base extraction port, and the raw material input port for the base replacement is located near both corners (38a, 38b) of the upstream side wall 31 and both the downstream side wall 34. It has the same configuration as that of the first embodiment except that it is provided near the corner (38c, 38d). The description of the configuration common to the first embodiment is omitted.
本実施態様において、素地替え用原料投入口３８ａ、３８ｂ、３８ｃ、３８ｄの少なくとも１つは、上流側側壁３１又は下流側側壁３４の壁面ではなく、左側壁３２或いは右側壁３３の壁面に設けてもよい。また素地替え原料用投入口は、４箇所設けておくことが望ましいが、１〜３箇所であってもよい。なお、素地替え原料用投入口を２箇所以下とする場合、少なくとも１箇所は、素地替え効率の観点から、下流側の隅部に設けることが好ましい。 In the present embodiment, at least one of the raw material replacement ports 38a, 38b, 38c, 38d is provided not on the wall surface of the upstream side wall 31 or the downstream side wall 34 but on the wall surface of the left side wall 32 or the right side wall 33. Is also good. Further, it is desirable to provide four locations for the base replacement material, but it is also possible to provide one to three locations. In the case where the number of inlets for the substrate replacement raw material is two or less, it is preferable to provide at least one at a corner on the downstream side from the viewpoint of substrate replacement efficiency.
次に上記の連続ガラス溶融炉３０を用いて別組成のガラスに切り替えるに当り、以下の工程を有する押し出し法を採用した。 Next, in switching to a glass of a different composition using the above continuous glass melting furnace 30, an extrusion method having the following steps was employed.
第一の工程として、流出口３７から溶融ガラスを排出する。また溶融ガラスの排出と同時に、上流側の隅部にある素地替え用原料投入口３８ａ、３８ｂの少なくとも１つから、異種原料バッチを投入する。異種原料バッチを上流側の隅部から投入すると、上流側隅部に滞留しがちな溶融ガラス（素地ガラス）を下流側に追い出し易くなる。 As a first step, the molten glass is discharged from the outlet 37. Simultaneously with the discharge of the molten glass, a different kind of raw material batch is supplied from at least one of the raw material replacement ports 38a and 38b at the corner on the upstream side. When a different kind of raw material batch is charged from the upstream corner, the molten glass (base glass), which tends to stay in the upstream corner, is likely to be expelled downstream.
第二の工程として、流出口３７からの溶融ガラスの排出を継続しながら、下流側の隅部にある素地替え用原料投入口３８ｃ、３８ｄの少なくとも１つからの異種原料バッチ投入を開始する。このとき、上流側からの異種バッチの投入は停止しても良いし、継続してもよい。下流側からの異種原料バッチの投入を開始すると、下流側隅部に滞留しがちな溶融ガラス（素地ガラス）を追い出し易くなる。 As the second step, while the discharge of the molten glass from the outflow port 37 is continued, the input of the different kind of raw material batch from at least one of the raw material replacement raw material input ports 38c and 38d at the downstream corner is started. At this time, the charging of the heterogeneous batch from the upstream side may be stopped or may be continued. When the feeding of the different raw material batches from the downstream side is started, it becomes easy to drive out the molten glass (base glass) which tends to stay at the downstream corner.
なお上記工程では、上流側の異種原料バッチの投入開始後に下流側の異種原料バッチを投入したが、上流側及び下流側の投入開始時期を同時にしても差し支えない。また必要に応じて、通常生産で使用する原料投入口３６ａ、３６ｂ、３６ｃ（の少なくとも一つ）を異種原料バッチの投入口として補助的に使用することも可能である。 In the above process, the downstream heterogeneous raw material batch is charged after the upstream heterogeneous raw material batch is started. However, the upstream and downstream charging start timings may be simultaneously set. If necessary, (or at least one of) the raw material input ports 36a, 36b, and 36c used in normal production can be used as an auxiliary material input port for a different kind of raw material batch.
２０、３０ 連続ガラス溶融炉
１１、２１、３１ 上流側側壁
１２、２２、３２ 左側壁
１３、２３、３３ 右側壁
１４、２４、３４ 下流側側壁
１５、２５、３５ 底壁
１６、２６ａ、２６ｂ、２６ｃ、３６ａ、３６ｂ、３６ｃ 原料投入口
２７、３７ 流出口
１８ａ、１８ｂ、２８ａ、２８ｂ、２８ｃ、３８ａ、３８ｂ、３８ｃ、３８ｄ 素地替え用原料投入口
１９、２９ 素地抜き出し口
20, 30 Continuous glass melting furnace 11, 21, 31 Upstream side wall 12, 22, 32 Left side wall 13, 23, 33 Right side wall 14, 24, 34 Downstream side wall 15, 25, 35 Bottom wall 16, 26a, 26b, 26c, 36a, 36b, 36c Raw material inlets 27, 37 Outlets 18a, 18b, 28a, 28b, 28c, 38a, 38b, 38c, 38d Raw material replacement inlets 19, 29 Green outlet
Claims (10)
連続ガラス溶融炉は、上流側側壁、左側壁、右側壁、下流側側壁、底壁及び天井を備える矩形の容器であり、
素地替え用原料投入口が、少なくとも上流側隅部に設けられており、
原料投入口とは別に設けられた素地替え用原料投入口から、溶融ガラスとは異なる組成となるように調合された異種原料バッチを投入することを特徴とする溶融ガラスの素地替え方法。 A molten glass in which a raw material batch is supplied from a raw material input port provided on an upstream side, and a molten glass is discharged from an outlet provided on a downstream side and sent to a forming means in a continuous glass melting furnace, where the molten glass is subjected to a base change. The method of replacing the base
The continuous glass melting furnace is a rectangular container having an upstream side wall, a left side wall, a right side wall, a downstream side wall, a bottom wall and a ceiling,
A raw material input port for substrate replacement is provided at least at the upstream corner,
A method for refining a molten glass, comprising charging a different kind of raw material batch prepared so as to have a composition different from that of the molten glass from a raw material refilling port provided separately from the raw material charging port.
上流側側壁、左側壁、右側壁、下流側側壁、底壁及び天井を備える矩形の容器であり、
且つ素地替え用原料投入口が、少なくとも上流側隅部に設けられていることを特徴とする連続ガラス溶融炉。 A raw material input port provided on the upstream side, an outlet provided on the downstream side, and a continuous glass melting furnace having heating means,
A rectangular container having an upstream side wall, a left side wall, a right side wall, a downstream side wall, a bottom wall, and a ceiling,
And matrix replacement for raw material inlet is a continuous glass melting furnace, characterized that you have provided at least upstream corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015189398A JP6670460B2 (en) | 2015-09-28 | 2015-09-28 | Method of changing molten glass substrate and continuous glass melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015189398A JP6670460B2 (en) | 2015-09-28 | 2015-09-28 | Method of changing molten glass substrate and continuous glass melting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017065933A JP2017065933A (en) | 2017-04-06 |
| JP6670460B2 true JP6670460B2 (en) | 2020-03-25 |
Family
ID=58494085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015189398A Expired - Fee Related JP6670460B2 (en) | 2015-09-28 | 2015-09-28 | Method of changing molten glass substrate and continuous glass melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6670460B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022075016A1 (en) * | 2020-10-08 | 2022-04-14 | Ａｇｃ株式会社 | Glass melting device, glass production method, and molten glass base material exchange method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6986358B2 (en) | 2017-03-29 | 2021-12-22 | 三菱重工業株式会社 | Information processing equipment, information processing methods and programs |
| KR102514358B1 (en) * | 2017-06-06 | 2023-03-29 | 코닝 인코포레이티드 | How to Recalibrate Your Glass Manufacturing System |
| JP7437612B2 (en) | 2020-06-17 | 2024-02-26 | 日本電気硝子株式会社 | Method for manufacturing glass articles |
| JP2022183902A (en) * | 2021-05-31 | 2022-12-13 | 日本電気硝子株式会社 | Method for producing glass article |
-
2015
- 2015-09-28 JP JP2015189398A patent/JP6670460B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022075016A1 (en) * | 2020-10-08 | 2022-04-14 | Ａｇｃ株式会社 | Glass melting device, glass production method, and molten glass base material exchange method |
| CN116194728A (en) * | 2020-10-08 | 2023-05-30 | Ａｇｃ株式会社 | Glass melting device, method for producing glass, and method for replacing molten glass material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017065933A (en) | 2017-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6670460B2 (en) | Method of changing molten glass substrate and continuous glass melting furnace | |
| WO2020009143A1 (en) | Method and device for manufacturing glass article, and glass substrate | |
| CN102503078A (en) | Two-slot type glass tank | |
| CN108975655A (en) | A kind of rolled glass melting furnaces suitable for producing coloured glass | |
| KR102540619B1 (en) | Glass melting furnace and method for producing glass articles | |
| CN104860509B (en) | The method for manufacturing of high uniformity optical glass | |
| CN102849920A (en) | Optical glass melting method and optical glass melting device used for method | |
| CN212334989U (en) | Cover plate glass kiln | |
| CN102901350B (en) | Metal melting furnace | |
| CN203768208U (en) | High-efficiency homogenizing clarifying tank with all-platinum structure | |
| CN109574474B (en) | Large-size fluorine-phosphorus glass forming device and method | |
| JP7063153B2 (en) | Manufacturing method of glass articles | |
| CN214167755U (en) | Melting structure for glass tube production | |
| CN105152520B (en) | A kind of high effective optical glass melting pond | |
| JP6252986B2 (en) | Glass melting furnace and method for changing the basis of molten glass | |
| CN103922563B (en) | Efficient homogenizing full platinum structure clarifying tank | |
| JP7167984B2 (en) | Method for manufacturing glass article | |
| CN108290761A (en) | Glass melting system and method for increasing batch of material dissolving and glass uniformity | |
| CN208500734U (en) | A kind of high-boron-silicon glass smelting furnace | |
| CN203922969U (en) | A kind of glass-melting furnace | |
| TW201529504A (en) | Molten glass supply system | |
| CN200940113Y (en) | Glass furnace cell with side drainer for discharging dirt | |
| CN104692645A (en) | Furnace deslagging system used for producing basalt continuous filament | |
| CN203794771U (en) | Molten glass supply system | |
| CN203582693U (en) | Molten glass channel for all-electric melting kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180802 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190724 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190807 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190903 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200131 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200213 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6670460 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |